"All the kids are making their own plans to come back to Houston to visit him and help him rally -- rally to recovery," said McGrath.

Bush's daughter, Dorothy, arrived on Wednesday for a visit. His sons, former President George W. Bush and former Florida Gov. Jeb Bush, will be paying a visit in the coming days.

The 41st president has been hospitalized since Nov. 23 with a lingering cough caused by bronchitis. Doctors were ready to send him home after a short string of good days, but changed their minds after Bush suffered a series of setbacks, including a few low-energy days and now a stubborn fever.